package com.zj.sso.example.controller.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

import com.zy.sso.client.secruity.JwtAuthenticationEntryPoint;
import com.zy.sso.client.secruity.filter.ApiAuthenticationTokenFilter;
import com.zy.sso.client.secruity.filter.JwtAuthenticationTokenFilter;

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter{

    @Autowired
    private JwtAuthenticationEntryPoint unauthorizedHandler;

    @Autowired
    private UserDetailsService userDetailsService;
    
    @Autowired
    private JwtAuthenticationTokenFilter userAuthenticationTokenFilter;

    @Autowired
    private ApiAuthenticationTokenFilter apiAuthenticationTokenFilter;
    
    @Autowired
    public void configureAuthentication(AuthenticationManagerBuilder authenticationManagerBuilder) throws Exception {
        authenticationManagerBuilder.userDetailsService(userDetailsService).passwordEncoder(passwordEncoder());
    }

    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

   

    @Override
    protected void configure(HttpSecurity httpSecurity) throws Exception {
        httpSecurity
        	// 由于使用的是JWT，我们这里不需要csrf
        	.csrf().disable()
            .exceptionHandling().authenticationEntryPoint(unauthorizedHandler).and()
            // 基于token，所以不需要session
            .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()
            .authorizeRequests()
            .antMatchers(HttpMethod.OPTIONS, "/**").permitAll()
             // 允许对于网站静态资源的无授权访问
             .antMatchers(
            		 HttpMethod.GET,
                     "/",
                     "/*.html",
                     "/favicon.ico",
                     "/**/*.html",
                     "/**/*.css",
                     "/**/*.js"
                ).permitAll()
                // 对于获取token的rest api要允许匿名访问
                .antMatchers("/auth/**").permitAll()
                .antMatchers("/test/**").permitAll()
                // 除上面外的所有请求全部需要鉴权认证
                .anyRequest().authenticated();
        // 添加JWT filter
        //httpSecurity.addFilterBefore(apiAuthenticationTokenFilter, JwtAuthenticationTokenFilter.class);
        httpSecurity.addFilterBefore(userAuthenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
       // httpSecurity.addFilter(filter)
        httpSecurity.addFilterBefore(apiAuthenticationTokenFilter, JwtAuthenticationTokenFilter.class);
        // 禁用缓存
        //httpSecurity.headers().cacheControl();

    }
}
